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Gas chromatograph for gas analysis in production field

A gas chromatograph, gas analysis technology, applied in the direction of analysis materials, instruments, scientific instruments, etc., can solve the problems of high price of imported instruments, high production cost, complex structure, etc., achieve strong impurity adsorption capacity, good thermal stability, Ease of use

Inactive Publication Date: 2015-07-08
SHANGHAI HUAAI CHROMATOGRAPHIC ANALYSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic high-sensitivity gas chromatographs have not yet realized on-line analysis of gases. Analytical instruments in this field are basically monopolized by imported instruments, but their complex structures and high production costs lead to high prices for imported instruments. widely accepted by users

Method used

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  • Gas chromatograph for gas analysis in production field
  • Gas chromatograph for gas analysis in production field
  • Gas chromatograph for gas analysis in production field

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Embodiment Construction

[0025] According to attached Figure 1~3 , The present invention is a gas chromatograph for gas analysis on the production site, comprising a sampling unit, a gas circuit control unit, a circuit control unit, a separation unit, a detection unit and a data processing unit.

[0026] According to attached figure 1 , The shell of the present invention is made of a 420mm long, 430mm wide, 5U (222mm) aluminum alloy chassis, the upper cover can be opened, and the bottom is a layer of mounting base plate for installing all parts of the present invention. The front panel can be disassembled separately, and there are four screws on the left and right sides of the chassis to easily disassemble the front panel, which is convenient for the installation and maintenance of the embedded computer.

[0027] The gas circuit control unit is connected to a high-precision solid filter 206 after the carrier gas (i.e. high-purity helium) enters the chassis, followed by a stainless steel diaphragm reg...

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Abstract

The invention discloses a gas chromatograph for gas analysis in production field, comprising a sampling unit, a gas path control unit, a circuit control unit, a separation unit, a detection unit and a data processing unit. The gas chromatograph for gas analysis in production field is characterized in that the sampling unit is a sampling and automatic sample injection unit, and is composed of a fixed volume sampling tube, a flow meter and a ten-way valve with blowing function; the gas path control unit is composed of a solid filter, a stainless steel diaphragm pressure stabilization valve and a helium purifier, and provides high-purity carrier gas for the separation unit; the circuit control unit is composed of a temperature control circuit, a signal amplification circuit and a detector pulse high-voltage circuit; the separation unit is provided with three diaphragm valves with blowing function, wherein one is the ten-way valve with blowing function in the sampling unit, the other two are four-way valves with blowing function, and complete separation of constituents is completed through a three-valve and four-column switching flow; the detection unit is a pulse helium ionization detector; and the data processing unit is composed of an embedded industrial control computer and a data uploading module. The gas chromatograph for gas analysis in production field has the advantages of high detection sensitivity, good stability and strong operability.

Description

technical field [0001] The invention relates to a gas chromatograph for on-line analysis of gas, in particular to a gas chromatograph for on-line analysis of gas at the production site, which is equipped with a high-sensitivity detector, can be installed in a cabinet or an analysis cabin, and is suitable for For gases with high detection accuracy requirements or in the chemical industry, the gas is analyzed online at the production site or in the central control link. It can also be installed together with other analytical equipment, which can meet the analysis needs of various workplaces, unlike laboratory gas chromatographs, which have great limitations in use. Background technique [0002] In recent years, with the continuous development of industry, the quality requirements of products have become higher and higher, and manufacturers have stricter requirements for product quality control, and higher requirements for the instruments used. In particular, gas online analys...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/34G01N30/20
Inventor 杨康方华
Owner SHANGHAI HUAAI CHROMATOGRAPHIC ANALYSIS
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